Antifriction-bearing.



F. E BRIGHT.

ANTIFRICTION BEARING.

APPLICATION FILED MAY 21, 19M.

1315,4741. Patented Feb.13,1917.

ED BRIGHT, 01 PHILADEL PHI A, PENNSYLVANIA, ASSIGNOR TO THE HESS-BRIGHT aranuraerueine conta n, A"

CORPORATION OEDELAWARE.

" AivrIrnIorron-isnmmd main,

To aZZ'wkom it may concern:

Be it known that I, FRED E. BnIeI-rr, a citizen of the United States, residlng' at Philadelphia, in the'countyof Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Antifricti-on Bearings, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention has reference to antifriction bearings of the type in which two series of annularly disposed balls are arranged in racewaysbetween inner and outer casing elements in suchmariner that the load sustain'ed' by the bearing will be distributed between the saidseries of balls.

. A bearing. of this type is disclosed in Letters Patent of the United States, No; 1,071,693 issued to me on the 2nd day of September, 1913, the two raceways for the respective series of balls being in this pat: ent, formed each by a fiat surface on the in-' ner side of the outer casing element, and an opposed groove on the outer side of the inner casing element, the balls being introduced through a filling opening extending through the inner casing element and situated between the'two raceways. In order to preserve the continuity of the ball tracks in the raceways, non full-depth filling notches were provided leading from the opposite sides of the filling opening, which notches terminated inward of the effective troduction of the balls into the raceway was effected by subjecting the balls to suflicie'nt forcible pressure to spring them into place.

The present invention is an improvement on the patented construction, the object be ing to increase the carrying or load capacity of the bearing, and this I effect in accordance with the present invention by substituting a grooved surface for the fiat surface of the patented construction, so that the raceway for a series of balls will be formed by opposing grooves in the respective casing elements, whereby the load carrying ca pacity of the bearing and its capability of receiving thrust loads are greatly increased. In order to preserve the continuity of the ball tracks as before, filling notches are formed in the inner sides of the opposing m Specification of Letters Patent.

A opening joins or merges into the filling notch in said casing element, theresult being that .lines of contact of the balls, so that the in-- bottom of the grooves where the balls have their efi'ective line of contact. Consequently some pressure will be'required to force or spring the balls through the filling notches into the raceway. One of the casing elernents, in the form of the invention shown in the drawings, the inner one,-is provided with a filling opening situated between the two raceways, the inner edge of which filling the balls may be successively passed through the filling opening and forced laterally through the filling notches into their. raceway, and when assembled therein, the balls will serve to maintain the parts of the bearing in proper operative relations, and will be prevented from In the accompanying drawing:

. Figure 1 is a side elevation of a ball bearing having my invention embodied therein;

Fig. 2 is a longitudinal sectional elevation of the same; I

Fig. 3 is a development of. a portion of the inner side of the outer casing element showing the filling notch therein and ig.- at is a similar view of the outer side of the inner casing element showing the filling opening and adjoining filling notch.

Referring to the drawings:

My improved bearing comprises an outer casing element 1, an inner casing element 2 arranged concentrically therein, and two series of antifriction balls 3 and 4 adapted to travel in the two raceways between said casing elements. The outer casing element is provided in its inner side with two grooves 5 and 6,.and the inner casing element is provided in its outer side with two grooves 7 and 8", the grooves 5 and 7 being opposed to each other and constituting a raceway for the balls 3, and the grooves 6 and 8 being likewise opposed to each other and constituting a, raceway for the balls 4, which series of balls in the operation of the bearing,

travel around in said raceways and will have .PatentedFeb.13,'1917. Application area sta 21, 1914. Serial No. 239,949,

escaping therefrom, thereby producing a unit-handling bearing.

cates at one side with ,a non full-depth filling notch 10 formed in the inner casing element 2 and extending laterally through the inner edge of the groove-7 and terminating a slight distance inward of the balltrack on said groove, the result being that the surface of the groove at this point extends slightly inward of the ball track and slightly over hangs the same. The opposing groove of: the outer casing element 1 is likewise formed with a non full-depth filling notch ll, which cuts through the inner edge of the groove 5 and terminates a slight distance inward of the ball track on said groove, thereby leaving an intact portion of the groove at this point, extending slightly inward of and overhanging the ball track. As a result of this construction the balls may be introduced into the raceway, after the two casing elements have been adjusted circumferentially to bring the filling notches in opposition to each other, by passing the halls in succession through the radial filling opening and into the filling notches and applying moderate pressure to the be forced through the filling over the intact portions of the grooves,- will spring into the raceway.

In the assemblage of the bearing, one of the series of balls 4. may be introduced into its raceway in different ways. For instance the casing elements may be displaced relativelyin an axial direction to a sufiicient extent to enable the balls to be assembled on one of the casing elements, after which the parts may be restored to their former operative concentric relations; or this series of balls may, after the casing been displaced axially, be passed in succession through the filling opening 9, and when all are in place, the casing elements may be restored to their former operative relations. After the series ii: of balls have been inserted in place, the other series 3 are introduced through the filling notches in the manner hereinbefore described, that is, each ball is notches and and passed in succession through the filling" openingJafter the filling notches have been properly alined, and the balls are then forced through the filling notches and sprung into their raceway.

As a result of thei construction described it is possible to employ casing elements which are each integral throughout and have ball tracks continuous and uninterrupted throughout their extent, the parts of the assembled bearing being held together by the balls in the form of a unitary structure.

In disassembling the bearing the foregoing assembling operations are reversed, the balls of the second series being first forced by slight pressure outward through the filling notches and then outward through the fillin opening, and when all have been balls, whereby they will elements have the said grooves so as removed, the casing elements are displaced axially to permit the removal of the other opposing grooves inclined outwardly and from the radial filling opening 9 in the inner ring. By reason of this relative form of the raceways, the tendency of the load sustained by the hearing is to maintain the two series of balls outwardly beyond the edges of the filling notches and the filling opening so that there will beno liability of the ballsrontacting with he notches or of their accidental escape through the filling opening.

While in the accompanying have illustrated my improved bearing in the form which I prefer to adopt and which in practice, has been found to answer to an admirable degree the objects to be attained, it is understood that the same is susceptible of various modifications which will suggest themselves to the skilled mechanic without departing from the limits of the invention and further it will be understood that the invention is not limited to any specific form or arrangement of the parts except in so far as such limitations are specified in the claims.

It is to be observed that in my improved construction, the non tull-depth filling notches 10 and 11 cooperate with each other in admitting the balls to the inner side of their raceway, and that these cooperating notches are disposed wholly inward of the ends of the casing elements. I believe myself to be the first, in a two-row bearing, to employ coiiperating non-full-depth filling notches in connection with a raceway consisting of opposed grooves, the said filling notches being formed in the inner sides of to admit the balls into the inner side of the raceway, and said cooperating notches being disposed and contained wholly inward of the ends of the easing elements. This construction is to be distinguished from such constructions as are set forth in my United States Patents, Nos. 1,072,080 and 1,071,693 in that in these prior patents, the raceway is not composed of op posing grooves, and in that in these prior patents, there is not present, cooperating non-full-depth filling notches. My improved construction is to be distinguished also from the Blin Patent 818,374 and the Witte Patent 900,634, in that in these prior patents, the cooperating filling notches do not admit the balls to the inner side of the f said notches are not disposed raceway, and thcrelore wholly inward of the ends of the drawings I.

ing element, the said inner said a casing elements, but rather they cut into said end Hav' g thus described my I claim is:

1. A ball bearing comprising inner and outer casing elements having two raceways between them for two series of balls, one of which raceways is formed by an external groove in the inner casing element and an opposing internal groove in the outer cascasing element being provided with a non-full-depth filling notch in the inner side of the groove therein, and the said outer casing element being provided with a non-full-depth filling notch in the inner side of its inte nal groove, said two filling notches being adapted to cooperate with each other in admitting balls to the raceway, and one of the casing elements being provided with a filling opening therethrough leading to the filling notch therein, the opposing grooves constituting raceways being so formed and disposed that the load on the bearing will act to urge the two series of balls from the filling open 1 A ball bearing comprising inner and invention, whatouter casing elements having between them for two series ofi balls, which raceways are formed by two grooves in the inner side of the outer casing element inclined outwardly in opposite directions from each other, and two grooves in the outer side of the inner casing element also inclined outwardly in opposite directions from each other and disposed opposite the other grooves, the grooves of one of said raceways being formed at their inner sides with nonfull-depth cooperating filling notches to a mit the balls to said raceway, and said inner casing element being provided between the grooves therein with a filling opening extending through the casing element and leading to thefilling notches; whereby the load on the bearing will act to urge the two series of balls outwardly and away from the filling opening. a

In testimony whereof, I have aflixed my signature in presence of two witnesses.

FRED E. BRIGHT.

Witnesses:

C. R. MOALLA, O. S. Burma.

two raceways 

